EUVD-2026-55529

In the Linux kernel, the following vulnerability has been resolved: iomap: fix out-of-bounds bitmapset with zero-length range ifssetrangedirty and ifssetrangeuptodate compute lastblk as off + len - 1 iblkbits. When off is 0 and len is 0, the unsigned subtraction underflows to SIZEMAX, producing a...

CVE-2026-68145 iomap: fix out-of-bounds bitmap_set() with zero-length range

In the Linux kernel, the following vulnerability has been resolved: iomap: fix out-of-bounds bitmapset with zero-length range ifssetrangedirty and ifssetrangeuptodate compute lastblk as off + len - 1 iblkbits. When off is 0 and len is 0, the unsigned subtraction underflows to SIZEMAX, producing a...

CVE-2026-68145

CVE-2026-68145 describes a Linux kernel iomap vulnerability where zero-length ranges in ifs_set_range_dirty() and ifs_set_range_uptodate() cause an unsigned underflow in (off + len - 1) >> i_blkbits, producing a huge last_blk and nr_blks and leading to out-of-bounds bitmap_set() writes. A f...

PT-2026-69545

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds write occurs in the iomap subsystem when handling zero-length ranges. The functions ifs set range dirty and ifs set range uptodate calculate the last blk value using a...